Slowly she leaned over, sticking her tongue out and licking the drop of pre-cum that had formed, actually sticking the tip of her tongue into the slit at the top of John's cock in the process.

"Isn't it yummy?" Kelly asked, excited watching Becky lick her brother's cock.

"It's okay," Becky said, tasting it for the first time. "I guess it's hard to tell."

"Just suck on it and you'll get more," Kelly told her. "Just pretend it's a lollipop."

"You mean all the way in my mouth?"

"Sure. Do you want me to show you?"

"You wouldn't!"

"I told you, it's just a cock. You suck it, you fuck...